Comptonia peregrina

Sweet Fern

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Deciduous shrub with fern-like foliage emitting a sweet fragrance when crushed. Native nitrogen-fixer in acidic sandy soils.
yard Outdoor plants wb_sunny Half-shade / Sun pets Pet Friendly
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Plant Details

Common Name Sweet Fern
Family Ericaceae
Genus Comptonia
Species Peregrina
Origin North America
Blooming Small inconspicuous flowers in summer, fragrant foliage year-round when crushed.
Leaf Color Dark green to grey-green
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly check Yes
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Care & Maintenance

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Soil

Acidic, sandy or peat-rich soil with excellent drainage; tolerates boggy conditions.

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Watering

Keep soil consistently moist during establishment, drought tolerant once established due to nodules.

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Sunlight & Care

Prefers full sun for best fragrance and growth, tolerates partial shade in hot climates.

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Fertilization

Minimal fertilization needed; nitrogen-fixing capabilities reduce nutrient requirements.

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Pruning

Prune in late winter before new growth emerges to maintain shape and remove dead wood.

Pest Control Aphid Caterpillar Scale Insect Spider Mite

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 7 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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Growing Parameters

thermostat
Temperature
23° – 86°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 80%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
1000 – 40000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1200 – 3500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
20% – 65%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1500
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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